export default{
	namespaced:true,
	state:() =>({
		cart:JSON.parse(uni.getStorageSync('cart') || '[]')
	}),
	mutations:{
		addToCart(state,goods){
			const findResult =state.cart.find(x => x.goods_id === goods.goods_id)
			
			if( !findResult){
				state.cart.push(goods)
			}else{
				findResult.goods_count++
			}
			this.commit('m_cart/saveToStorage')
			
		},
		saveToStorage(state){
			uni.setStorageSync('cart',JSON.stringify(state.cart))
		},
		updateGoodsState(state,goods){
			const findResult= state.cart.find(x => x.goods_id === goods.goods_id)
			
			if(findResult){
				findResult.goods_state =goods.goods_state
				
				this.commit('m_cart/saveToStorage')
			}
		},
		updateGoodsCount(state,goods){
			const findResult = state.cart.find(x => x.goods_id === goods.goods_id)
			
			if(findResult){
				findResult.goods_count =goods.goods_count
				
				this.commit('m_cart/saveToStorage')
			}
		},
		removeGoodsById(state,goods_id){
		state.cart = state.cart.filter(x =>x.goods_id!== goods_id)
			
			this.commit('m_cart/saveToStorage')
		},
		updateAllGoodsState(state,newState){
			state.cart.forEach(x => x.goods_state =newState)
			
			this.commit('m_cart/saveToStorage')
		}
		
		
	},
	
	getters:{
		
		
		total(state){
			// let c =0
			// state.cart.forEach(x => c += x.goods_count)
			// return c
			
		return	state.cart.reduce((total,item)=> total +=item.goods_count,0)
		},
		checkedCount(state){
		return	state.cart.filter(x => x.goods_state).reduce((total,item) => total +=item.goods_count,0)
		},
		checkedGoodsAmount(state){
		return	state.cart.filter(x => x.goods_state).reduce((total,item) => total +=item.goods_count * item.goods_price,0).toFixed(2)
		}
	},
	
}